Network board card hub protection device

Abstract

The invention discloses a network board card hub protection device, and relates to the technical field of grid board card protection devices.The network board card hub protection device comprises a safety cabinet main body, the safety cabinet main body is provided with a plurality of containing cavities and wire arrangement holes, grid board cards are arranged in the containing cavities, and cables of the grid board cards penetrate through the wire arrangement holes and extend to the exterior of the safety cabinet main body; the cable cutting assembly is arranged on the side, away from the cabinet door, of the safety cabinet body, and the cable cutting assembly is provided with a cutting end; the starting part is arranged at the bottom of the safety cabinet main body close to the cable cutting assembly, the driving part is detachably connected with the cable cutting assembly, the starting part is provided with a switch, and the cutting end moves towards the wire arrangement hole when the switch is turned on. By adopting the technical scheme, the purpose of protecting data security when a fire occurs is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of grid board protection devices, and in particular to a network board hub protection device. Background Art

[0002] For most companies, in order to improve work efficiency, computers have become an indispensable office tool. The information stored in computers is increasing and becoming more and more important. In order to prevent accidental loss of data in computers, many capable companies have established their own data storage systems based on servers, using servers or grid boards for data storage. As the core part of the enterprise data center, the security of the server room is increasingly valued, and the data safety cabinet, which is mainly used to store data, is of great importance.

[0003] In order to improve the safety of the grid board, the related art discloses a data cabinet, including: a data cabinet body and a cabinet door, the cabinet door is installed on the front surface of the data cabinet body, a perfluorohexanone fire extinguishing tank is placed on the left side of the data cabinet body, the perfluorohexanone fire extinguishing tank is connected to the gas pipe through the air inlet hose, the right side of the gas pipe is connected to the nozzle, the upper end of the data cabinet body is installed with a retractable roller through a fixed frame, the retractable roller surface is rolled up with a fireproof cloth, the lower end surface of the fireproof cloth is fixed with a limited bottom plate, the upper surface of the data cabinet body is welded with a fixed seat, and the fixed seat is connected to a pressure plate through an electric push rod. Although the related art can achieve rapid fire extinguishing when the cabinet is on fire, when a fire occurs in the computer room, the cable fire will cause the grid board connected to it to catch fire, thereby causing data damage. Even if the cabinet is extinguished by a fire extinguishing device, the failure to extinguish the fire at the cable in time will cause data damage. Based on the above problems, it is urgently needed to provide a data safety cabinet that can protect data security in the event of a fire. Summary of the invention

[0004] The present invention aims to provide a network card hub protection device to solve the problem that the data in the network card is difficult to be effectively protected when a fire occurs.

[0005] The present application provides a network card hub protection device, comprising: The main body of the safety cabinet comprises a cabinet body and a cabinet door closing the cabinet body, wherein the cabinet body of the safety cabinet body is provided with a plurality of accommodating cavities and cable holes for accommodating grid boards, and the cables of the grid boards pass through the cable holes and extend to the outside of the cabinet body of the safety cabinet body; A cable cutting assembly is arranged on a side of the safety cabinet body away from the cabinet door, and the cable cutting assembly has a cutting end for automatically cutting the cables of the grid board; An actuating member is arranged at the bottom of the safety cabinet body near the cable cutting assembly. The actuating member is detachably connected to the cable cutting assembly. The actuating member has a switch. When the switch of the actuating member is turned on, the cutting end of the cable cutting assembly moves toward the direction of the cable arrangement hole of the safety cabinet body.

[0006] By adopting the above technical solution, the cable cutting assembly is arranged on the side of the safety cabinet body away from the cabinet door, and has a cutting end. When a fire occurs in the cable, the cutting end will automatically cut the cable and seal the grid board. The starting member located at the bottom of the safety cabinet body has a switch, which can trigger the cutting action of the cable cutting assembly when turned on. When a fire signal is discovered manually or detected by a smoke alarm, the operator can turn on the switch to enable the cable cutting assembly to quickly cut the cable to prevent the fire from spreading to the storage area of ​​the grid board, thereby protecting the safety of the data.

[0007] Optionally, the cable cutting assembly includes: A counterweight block is evenly provided with a plurality of heat dissipation holes, through which cables pass, the counterweight block is slidably connected to the cabinet body along the height direction of the safety cabinet body, and the counterweight block is detachably connected to the starter; A connecting rope, one end of which is fixedly connected to the bottom of the counterweight away from the safety cabinet body; A cutting knife, so that the cutting end is arranged on the tip of the cutting knife, the cutting knife is fixedly connected to the other end of the connecting rope, and the gravity of the cutting knife is greater than the counterweight block; The installation shaft is arranged near the top of the connection cabinet body. The installation shaft is fixedly connected in the safety cabinet body. The connection rope can rotate around the installation shaft.

[0008] By adopting the above technical solution, the counterweight block is slidably connected to the cabinet body along the height direction of the safety cabinet body, and its gravity is relatively large. Under normal circumstances, the counterweight block will be close to the bottom of the safety cabinet due to the existence of the starting member. The setting of the heat dissipation holes of the counterweight block helps to dissipate heat and maintain the normal operating temperature of the equipment. When the counterweight block moves, the connecting rope will also move, thereby driving the cutting knife to move. The cutting knife is located above the counterweight block, and a cutting end is provided on the tip of the knife. The gravity of the cutting knife is greater than the counterweight block, and the cutting knife will move downward quickly. The cutting end on the tip of the knife will cut the cable, thereby achieving rapid cutting of the cable.

[0009] Optionally, a cooling component is also included, and a plurality of cooling chambers are opened on the safety cabinet body. The plurality of cooling chambers are arranged at intervals close to the outer side of the grid plate and are interconnected. When the counterweight block rises along the height direction of the safety cabinet body, it can drive the cooling component to start and transport cooling medium into the cooling chamber.

[0010] By adopting the above technical solutions, grid boards and other devices are very sensitive to temperature. Excessive temperature can cause hardware damage or even data loss. When a fire occurs, the sharp rise in temperature may cause damage to grid boards and other devices. The cooling component can be quickly activated when a fire occurs, and the cooling medium can be transported to the cooling chamber to reduce the temperature in the chamber, reduce equipment damage caused by high temperature, and reduce the risk of data loss.

[0011] Optionally, the cooling component includes: A storage box is arranged on the safety cabinet body, and a cooling medium is arranged in the storage box, and the cooling medium is liquid nitrogen; A connecting pipe, one end of which is fixedly connected to the storage box, and the other end of which is fixedly connected to the safety cabinet body, the connecting pipe and the cooling chamber are in communication with each other, and the connecting pipe includes a mixing pipe section; The rotating paddle is arranged in the mixing pipe section and rotates around the axis of the connecting pipe. Both ends of the rotating paddle slide against the inner wall of the mixing pipe section.

[0012] By adopting the above technical solution, when a fire occurs, the cooling component can be quickly activated by releasing the liquid nitrogen in the storage tank and transporting it to the cooling chamber through the connecting pipe. The rotating paddle may play a role in regulating the flow of liquid nitrogen in this process, ensuring that it effectively reduces the temperature in the chamber, thereby reducing the risk of equipment damage caused by high temperature and reducing the possibility of data loss.

[0013] Optionally, the mounting shaft is fixedly connected to the mixing tube segment, a first pulley is coaxially arranged on the mounting shaft, the first pulley is fixedly connected to a connecting rod, the connecting rod passes through the mixing tube segment and is fixedly connected to the rotating paddle, and the connecting rope passes through the first pulley.

[0014] By adopting the above technical solution, the transmission efficiency of the connecting rope is increased.

[0015] Optionally, it further includes a second pulley, which is arranged parallel to the first pulley, and the connecting rope transmission is connected to the first pulley and the second pulley.

[0016] By adopting the above technical solution, the first pulley and the second pulley are arranged to transmit power together, thereby preventing the first pulley from being subjected to excessive force.

[0017] Optionally, the counterweight is made of magnetic material, and the starting element includes: An electromagnet is arranged at the bottom of the safety cabinet body, and when the electromagnet is turned on, it magnetically repels the counterweight block, and when the electromagnet is turned off, it is magnetically connected to the counterweight block; The switch is electrically connected to the electromagnet, and the switch is used to control the opening and closing of the electromagnet.

[0018] By adopting the above technical solution, the magnetic connection between the counterweight and the electromagnet is disconnected when a fire occurs. Since the weight of the counterweight is less than the cutting knife, the counterweight moves toward the top of the safety cabinet body under the pulling force of the cutting knife, and the connecting rope also moves with it to drive the cutting knife. The cutting end on the knife tip will cut the cable, thereby achieving rapid cable cutting, thereby preventing the grid board from being damaged due to cable fire and affecting data security.

[0019] Optionally, there are multiple rotating paddles, and the multiple rotating paddles are arranged in a circular array around the axis of the mixing tube section.

[0020] By adopting the above technical solution, the stirring efficiency of the cooling medium in the mixing pipe section is increased, so that the cooling medium is quickly transported to the cooling chamber.

[0021] Optionally, the safety cabinet body further comprises a guide plate, wherein the guide plate is fixedly connected to the cabinet body, adjacent guide plates are formed with guide grooves, and the cut-off blade is slidably matched with the guide grooves.

[0022] By adopting the above technical solution, a guide groove is formed between two adjacent guide plates to ensure that the blade slides along a predetermined path when moving, thereby avoiding deviation of the blade during sliding.

[0023] Optionally, the safety cabinet body further comprises a cutting bottom plate, on which a triangular groove is formed, and the cutting knife can be snap-fitted with the triangular groove.

[0024] By adopting the above technical solution, it is ensured that the cutting knife accurately falls onto the cutting bottom plate, and the cutting knife is firmly clamped into the triangular groove of the cutting bottom plate through the clamping cooperation with the triangular groove, thereby facilitating the cutting of the cable.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up a safety cabinet body, a cable cutting component and a starter, when a fire occurs, the starter is triggered to open, so that the cable cutting component cuts off the cable and seals the cabinet, thereby preventing the grid board from being damaged due to cable fire and affecting data security; 2. By setting the counterweight, connecting the rope, cutting knife and installing the shaft, the tip of the cutting knife cuts the cable under the action of gravity, thereby realizing the rapid cutting of the cable; 3. By setting up a cooling component, the descent of the cutting knife triggers the start-up of the entire cooling component, thereby delivering the cooling medium to the outside of the grid board, effectively reducing the temperature in the cooling chamber, and protecting the grid board and other equipment from the influence of high temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the front side in Example 1 of the present application; Figure 2 is a schematic diagram of the overall structure of the back side in Example 1; Figure 3 is a cross-sectional view of the cabinet structure in Example 1; Figure 4 is a schematic diagram of the structure of the cable cutting component and the cooling component in Example 1; Figure 5 is a schematic diagram of the structure of the rotating paddle in Example 1; Figure 6 It is a schematic structural diagram of the guide plate and the cutting base in Example 1.

[0027] In the figure: 1. Safety cabinet body; 11. Cabinet door; 12. Accommodating chamber; 13. Guide plate; 14. Cutting bottom plate; 2. Cable cutting assembly; 21. Counterweight; 22. Connecting rope; 23. Cutting knife; 24. Mounting shaft; 25. First pulley; 26. Second pulley; 27. Connecting rod; 3. Starting member; 4. Cooling assembly; 41. Cooling chamber; 42. Storage box; 43. Connecting pipe; 431. Mixing pipe section; 432. First pipe section; 433. Second pipe section; 44. Rotating paddle. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 To Attachment Figure 6 , further details of this application are given.

[0029] Embodiment 1: Reference Figure 1 and Figure 2 A network card hub protection device includes a safety cabinet body 1, a cable cutting component 2, a starter 3 and a cooling component 4.

[0030] Reference Figure 1 The main body 1 of the safety cabinet includes a cabinet body and a cabinet door 11 connected to the cabinet body. The cabinet body includes a first storage chamber at the top and a second storage chamber at the bottom. A plurality of drawers are slidably arranged on the first storage chamber. In the present embodiment, there are two drawers, and the drawers are used to store electronic components. The second storage chamber is provided with a plurality of accommodating cavities 12 with a long cross-section for accommodating grid boards and cable holes for passing cables. A plurality of grid boards are respectively arranged in the accommodating cavities 12, one end of the cable is fixedly connected to the grid board, and the other end passes through the cable hole and extends to the outside of the main body 1 of the safety cabinet. Among them, the grid board at the bottom of the main body 1 of the safety cabinet is mainly used to store data, so its fire resistance is extremely high. The main body 1 of the safety cabinet is made of high-quality steel and has good fire resistance, shock resistance and high temperature resistance. The surface of the outer shell is chemically treated and has good corrosion resistance and wear resistance.

[0031] Reference Figure 1 and Figure 2 The cable cutting assembly 2 is arranged on a side of the safety cabinet body 1 away from the cabinet door 11. The cable cutting assembly 2 has a cutting end, which is used to cut the cable and seal the grid card when the cable catches fire.

[0032] Reference Figure 3 and Figure 4 The cable cutting assembly 2 includes a counterweight 21, a connecting rope 22, a cutting knife 23 and a mounting shaft 24 (combined with Figure 4 ). A plurality of vertical heat dissipation holes are evenly arranged on the counterweight 21, and the cables pass through the heat dissipation holes. The counterweight 21 is slidably connected to the cabinet body along the height direction of the safety cabinet body 1, and the counterweight 21 is detachably connected to the starting member 3. The provision of the heat dissipation holes of the counterweight 21 helps to dissipate heat and maintain the normal operating temperature of the equipment. One end of the connecting rope 22 is fixedly connected to the bottom of the counterweight 21 away from the safety cabinet body 1, and the other end is fixedly connected to the cutting knife 23. The counterweight 21 is made of magnetic material. The mounting shaft 24 is arranged near the top of the connecting cabinet body, and the mounting shaft 24 is fixedly connected in the safety cabinet body 1, and the connecting rope 22 can rotate around the mounting shaft 24.

[0033] Reference Figure 2 and Figure 4 , the starter 3 is arranged at the bottom of the safety cabinet body 1 near the cable cutting assembly 2, the driving member is detachably connected to the cable cutting assembly 2, the starter 3 includes an electromagnet and a switch for controlling the electromagnet (not shown in the figure), and when the switch is closed, the cutting end moves toward the direction close to the cable arrangement hole and cuts the cable. The electromagnet is arranged at the bottom of the safety cabinet body 1, and the switch is electrically connected to the electromagnet, and the switch is used to control the opening and closing of the electromagnet. When the switch turns on the electromagnet, the electromagnet is magnetically repelled and connected to the counterweight 21; when the switch turns off the electromagnet, the electromagnet is magnetically attracted and connected to the counterweight 21. The cutting end is arranged on the tip of the cutting knife 23, and the cutting knife 23 is fixedly connected to the other end of the connecting rope 22, and the gravity of the cutting knife 23 is greater than the counterweight 21.

[0034] When a fire occurs, the starter 3 is triggered to open, and the triggering of the starter 3 causes the magnetic connection between the counterweight 21 and the electromagnet to be disconnected. At this time, since the gravity of the counterweight 21 is less than the cut-off knife 23, the counterweight 21 moves toward the top of the safety cabinet body 1 under the pulling force of the cut-off knife 23, and the connecting rope 22 also moves with it to drive the cut-off knife 23. Since the gravity of the cut-off knife 23 is much greater than the counterweight 21, the cut-off knife 23 will move downward rapidly under the action of gravity, and the cutting end on the knife tip will cut the cable, thereby achieving rapid cutting of the cable, thereby preventing the cable from catching fire and causing damage to the grid board and affecting data security.

[0035] Reference Figure 3The main body 1 of the safety cabinet is provided with a plurality of cooling chambers 41, which are arranged at intervals near the outside of the grid plate and are interconnected. When the counterweight 21 rises along the height direction of the main body 1 of the safety cabinet, it can drive the cooling component 4 to start and transport the cooling medium into the cooling chamber 41. The cooling component 4 includes a storage box 42, a connecting pipe 43 and a rotating paddle 44. The storage box 42 is arranged on the side wall of the main body 1 of the safety cabinet, and a cooling medium is arranged in the storage box 42, and the cooling medium is liquid nitrogen. Liquid nitrogen is a commonly used cooling medium. When encountering high temperature, liquid nitrogen will quickly gasify, expand and absorb heat. Its low temperature characteristics can effectively reduce the temperature in the cooling chamber 41. The connecting pipe 43 is interconnected with the cooling chamber 41, and the connecting pipe 43 includes a mixing pipe section 431, a first pipe section 432 and a second pipe section 433. The first pipe section 432, the mixing pipe section 431 and the second pipe section 433 are connected in sequence. The mixing pipe section 431 is fixedly connected to the cabinet body by a buckle. One end of the first pipe section 432 is fixedly connected to the storage box 42 and communicates with each other, and the other end of the first pipe section 432 is communicated with the mixing pipe section 431; the second pipe section 433 is arranged between the counterweight block 21 and the cutting knife 23, and in order to avoid cutting the connecting pipe 43 during the descending process of the cutting knife 23, the second pipe section 433 is arranged on the side wall of the safety cabinet body 1. In addition, the second pipe section 433 is communicated with the cooling chamber 41.

[0036] When a fire occurs, the liquid nitrogen in the storage tank 42 can be quickly released to cope with the sharp rise in ambient temperature. The connecting pipe 43 connects the storage tank 42 and the cooling chamber 41. One end is connected to the storage tank 42, and the other end is connected to the safety cabinet body 1. Through the connecting pipe 43, the liquid nitrogen can flow from the storage tank 42 to the cooling chamber 41. This connection ensures that the liquid nitrogen can be effectively transported to the location where cooling is required.

[0037] Reference Figure 5 The rotating paddle 44 is arranged in the mixing tube section 431, rotates around the axis of the connecting tube 43, and the two ends of the rotating paddle 44 slide against the inner wall of the mixing tube section 431. There are multiple rotating paddles 44, and the multiple rotating paddles 44 are arranged in a circular array around the axis of the mixing tube section 431. The installation shaft 24 is fixedly connected to the mixing tube section 431, and the first pulley 25 and the second pulley 26 are coaxially arranged on the installation shaft 24. The first pulley 25 is fixedly connected to the connecting rod 27, and the connecting rod 27 passes through the mixing tube section 431 and is fixedly connected to the rotating paddle 44, and the connecting rope 22 passes through the first pulley 25 and the second pulley 26 and is transmission-connected to the two. The second pulley 26 is arranged parallel to the first pulley 25. The rotating paddle 44 is arranged in the mixing tube section 431 of the connecting tube 43. It rotates around the axis of the connecting tube 43, and its two ends slide against the inner wall of the mixing tube section 431.

[0038] Reference Figure 6The main body 1 of the safety cabinet also includes guide plates 13, which are arranged in pairs on both sides of the cabinet body. A guide groove is formed between two adjacent guide plates 13, and the blade of the cutting knife 23 slides with the guide groove. The main body 1 of the safety cabinet also includes a cutting bottom plate 14, which is arranged at the bottom of the cutting knife 23. A triangular groove is provided on the cutting bottom plate 14, and the cutting knife 23 can be engaged with the triangular groove. The guide groove formed between the two adjacent guide plates 13 ensures that the blade slides along a predetermined path when moving, and avoids deviation during the sliding process of the blade. The design of the triangular groove can ensure that the cutting knife 23 accurately falls on the cutting bottom plate 14, and the cutting knife 23 is firmly engaged in the triangular groove of the cutting bottom plate 14 through the engagement with the triangular groove, so as to facilitate cutting of the cable. In addition, the engagement between the cutting bottom plate 14 and the cutting knife 23 ensures a good seal between the two.

[0039] The implementation principle of Example 1 of the present application is as follows: When a fire occurs, the switch is activated so that the magnetic attraction connection between the electromagnet and the counterweight 21 is converted into a magnetic repulsion connection, so that the counterweight 21 rises and the cut-off knife 23 descends. The process of the cut-off knife 23 descending will drive the rotation of the connecting rope 22. The connecting rope 22 is connected to the first pulley 25 and the second pulley 26. Therefore, the descent of the cut-off knife 23 will cause the first pulley 25 and the second pulley 26 to rotate together. The rotation of the first pulley 25 and the second pulley 26 will pull the connecting rod 27, and there is a mechanical connection between the connecting rod 27 and the rotating paddle 44. When the connecting rod 27 rotates, it drives the rotating paddle 44 to rotate synchronously around the axis of the mixing tube section 431. The rotation of the rotating paddle 44 regulates the flow of liquid nitrogen in the mixing tube section 431, ensuring that the liquid nitrogen is gasified and transferred to the cooling chamber 41, thereby effectively reducing the temperature in the chamber. Therefore, the descent of the cut-off knife 23 triggers the start-up of the entire cooling assembly 4, thereby delivering the cooling medium to the outside of the grid board, effectively reducing the temperature in the cooling chamber 41, and protecting the grid board and other equipment from the influence of the high temperature environment.

[0040] Example 2 The embodiment 2 is substantially the same as the embodiment 1, except that a smoke alarm is additionally provided in the embodiment 2.

[0041] The smoke alarm is electrically connected to the switch of the electromagnet. When the signal receiving unit of the smoke alarm receives the high-temperature smoke signal, it can drive the internal control unit to drive the switch to open, thereby driving the counterweight 21 to rise rapidly, and then driving the cutting knife 23 to cut the cable. The specific structure and working principle of the smoke alarm are prior art.

[0042] The implementation principles of this embodiment and embodiment 1 are substantially the same.

[0043] It should be noted that the electromagnet and smoke alarm in this embodiment are both devices purchased on the market, and the models can be selected or customized according to actual needs. In this application, we only use them and have not improved their structure and function. For technicians in this field, their setting method, installation method and electrical connection method only need to be debugged and operated according to the requirements of their instruction manual, and they will not be described in detail here.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A network card hub protection device, characterized in that: include: A safety cabinet body (1) comprises a cabinet body and a cabinet door (11) closing the cabinet body, wherein the cabinet body of the safety cabinet body (1) is provided with a plurality of accommodating cavities (12) for accommodating grid boards and cable holes, and cables of the grid boards pass through the cable holes and extend to the outside of the cabinet body of the safety cabinet body (1); A cable cutting assembly (2) is arranged on a side of the safety cabinet body (1) facing away from the cabinet door (11), the cable cutting assembly (2) having a cutting end for automatically cutting the cables of the grid board; An actuating member (3) is arranged at the bottom of the safety cabinet body (1) near the cable cutting assembly (2); the actuating member (3) is detachably connected to the cable cutting assembly (2); the actuating member (3) has a switch; when the switch of the actuating member (3) is turned on, the cutting end of the cable cutting assembly (2) moves toward the direction close to the cable arrangement hole of the safety cabinet body (1).

2. The network card hub protection device according to claim 1, characterized in that: The cable cutting assembly (2) comprises: The counterweight block (21) is evenly provided with a plurality of heat dissipation holes, through which cables pass, the counterweight block (21) is slidably connected to the cabinet body along the height direction of the safety cabinet body (1), and the counterweight block (21) is detachably connected to the starter (3); A connecting rope (22), one end of which is fixedly connected to the bottom of the counterweight (21) away from the safety cabinet body (1); A cutting knife (23), wherein the cutting end is arranged on the tip of the cutting knife (23), the cutting knife (23) is fixedly connected to the other end of the connecting rope (22), and the gravity of the cutting knife (23) is greater than that of the counterweight (21); The installation shaft (24) is arranged near the top of the connection cabinet body, the installation shaft (24) is fixedly connected in the safety cabinet body (1), and the connection rope (22) can rotate around the installation shaft (24).

3. The network card hub protection device according to claim 2, characterized in that: It also includes a cooling component (4), wherein a plurality of cooling chambers (41) are provided on the safety cabinet body (1), and the plurality of cooling chambers (41) are spaced apart and interconnected near the outer side of the grid plate card, and when the counterweight (21) rises in the height direction of the safety cabinet body (1), it can drive the cooling component (4) to start and transport cooling medium into the cooling chamber (41).

4. The network card hub protection device according to claim 3, characterized in that: The cooling component (4) comprises: A storage box (42) is arranged on the safety cabinet body (1), wherein a cooling medium is arranged in the storage box (42), and the cooling medium is liquid nitrogen; A connecting pipe (43), one end of which is fixedly connected to the storage box (42), and the other end of which is fixedly connected to the safety cabinet body (1); the connecting pipe (43) and the cooling chamber (41) are in communication with each other, and the connecting pipe (43) comprises a mixing pipe section (431); The rotating paddle (44) is arranged in the mixing pipe section (431) and rotates around the axis of the connecting pipe (43), and the two ends of the rotating paddle (44) slide against the inner wall of the mixing pipe section (431).

5. The network card hub protection device according to claim 4, characterized in that: The installation shaft (24) is fixedly connected to the mixing pipe section (431); a first pulley (25) is coaxially arranged on the installation shaft (24); the first pulley (25) is fixedly connected to a connecting rod (27); the connecting rod (27) passes through the mixing pipe section (431) and is fixedly connected to the rotating paddle (44); and the connecting rope (22) passes through the first pulley (25).

6. The network card hub protection device according to claim 5, characterized in that: The cable cutting assembly (2) further comprises a second pulley (26), wherein the second pulley (26) is arranged in parallel with the first pulley (25), and the connecting rope (22) is drivingly connected to the first pulley (25) and the second pulley (26).

7. The network card hub protection device according to claim 2, characterized in that: The counterweight block (21) is made of magnetic material, and the starting element (3) comprises: An electromagnet is arranged at the bottom of the safety cabinet body (1), and when the electromagnet is turned on, it magnetically repels the counterweight (21), and when the electromagnet is turned off, it is magnetically connected to the counterweight (21); The switch is electrically connected to the electromagnet and is used to control the opening and closing of the electromagnet.

8. The network card hub protection device according to claim 5, characterized in that: There are a plurality of rotating paddles (44), and the plurality of rotating paddles (44) are arranged in a circular array around the axis of the mixing pipe section (431).

9. The network card hub protection device according to claim 2, characterized in that: The safety cabinet body (1) further comprises a guide plate (13), wherein the guide plate (13) is fixedly connected to the cabinet body, and adjacent guide plates (13) are formed with guide grooves, and the cut-off blade (23) is slidably matched with the guide grooves.

10. The network card hub protection device according to claim 2, characterized in that: The safety cabinet body (1) further comprises a cutting bottom plate (14), the cutting bottom plate (14) being provided with a triangular groove, and the cutting blade (23) can be engaged with the triangular groove.

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